Improvement in balance slide-valves



1). B, KI MBL. "Balance-Slide Valve Patented Sept. 2,1879 7 I 1 1 I'hvenbo r "gm/1Q.

1 s e 5 5 E n d W be a full, clear, and exact description thereof.

.The valve's have flanges I, which project UNITED STATES DAVID B.KIMMEL, OF IDAHO CITY, IDAHO TERRITORY.

IMPROVEMENT IN BALANCE SLIDE-VALVES.

Specification forming part of Letters Patent No. 219, 161, datedSeptember 2,1879 application filed June 16, 1879.

To all whom it may concern:

Be it known that I, DAVID B. KIMMEL, of Idaho City, and county of Boise,and Territory of Idaho, have invented a Balance Slide- Valve; and Ihereby declare the following to 'My invention relates to certainimprovements in valves for steam and other engines; and it consists in anovel-construction of a double slide-valve having a vertical seat withports so arranged upon opposite sides that they are controlled by thedouble valve. The two parts of this double valve are united by a frame,so as to move simultaneousl and be actuated by a single valve-stem, aswill be more fully described Hy reference to the accompanying drawings,in which- Figure 1 is a view of my valve and seat applied to a cylinder,and having the steam-chest and cover removed. Fig. 2 is a view of thevalve removed from the seat. Fig. 3 is a view of the steam-chest,showing the ports on opposite sides of the valve-seat. Fig. 4 is ahorizontal section of the valve and frame.

A is the cylinder of an engine. Bis the face or plate upon which thesteam-chest is bolted or secured. From this face the valveseat 0 arises.This seat is of considerable height, and has ports D upon each side, asshown. I

Any arrangement of portsmay be employed; but I have shown in the presentcase two steam-ports upon each side, with an exhaustport between them.

The valve is double, consisting of the two valves E E, each of which isconstructed in the usual manner of forming such valves, and one of themcontrols one set of ports, while the other controls the opposite set.These valves are fitted into openings or sockets in a frame, F, whichextends beyond each end of the seat 0, and its opposite ends may beunited by a bolt or other device, G, so that they may be adjusted to fitthe valves to their seats.

slightly beyond the edges of the sockets in the frame F, so that aslight steam'pressure will be exerted upon these flanges, and thusinsure the valves working steam-tight upon their seats without unduepressure or friction.

The frame incloses the main portion of the valves, and it issuiflciently rigid to prevent the valves from being forced With greatpressure upon their seats, and each valve through the frame resists thepressure of the steam upon the other, so that my valve is perfectlybalanced.

A single stem, H, extends outward from the frame F at one end, and,passing through the end of the steam-chest with a suitable stuffing-box, is connected with the eccen tric or other means by which thevalve is to be moved.

It will be seen that my balanced valve can be easily applied to anyengine by fitting the double vertical valve-seat O to the seat asordinarily constructed, and the change can be made at small expense. Itis especially fitted for locomotive-engines, in which the valves andports are large, and the valves are subjected to great pressure andrapid motion.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The vertical'valve-seat O, with its ports D upon opposite sides, asshown, in combination with the valves E and the connectingframe F, madeadjustable by bolts Gr, so as to hold the valves to their seats,substantially as herein described.

2. .The vertical hollow valvescat O, with its two sets ofoppositely-situated ports D, in combination with the valves E E and theinclosing supporting-frame F said valves moving with the frame, andhaving flanges I, whereby they are held to their seats, substantially asherein described.

In witness whereof I have hereunto set my hand.

DAVID B. KIMMEL. Witnesses:

GEO. H. STRONG, S. H. NoURsE.

